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Have you been having bizarre dreams lately? CNN's Chief Medical Correspondent Dr. Sanjay Gupta talks to Harvard dream researcher Deirdre Barrett about her Covid-19 dream survey and what happens when we close our eyes during this global crisis.

Have you been having bizarre dreams lately? CNN's Chief Medical Correspondent Dr. Sanjay Gupta talks to Harvard dream researcher Deirdre Barrett about her Covid-19 dream survey and what happens when we close our eyes during this global crisis.